jni_generator: Make all object-returning natives return ScopedJavaLocalRef.

chrome/browser/profiles/profile_android.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_PROFILES_PROFILE_ANDROID_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_ANDROID_H_
 
 #include <jni.h>
 
 #include "base/android/scoped_java_ref.h"
 #include "base/compiler_specific.h"
 #include "base/supports_user_data.h"
 
 class Profile;
 
 // Android wrapper around profile that provides safer passage from java and
 // back to native.
 class ProfileAndroid : public base::SupportsUserData::Data {
  public:
   static ProfileAndroid* FromProfile(Profile* profile);
   static Profile* FromProfileAndroid(jobject obj);
   static bool RegisterProfileAndroid(JNIEnv* env);
 
-  static jobject GetLastUsedProfile(JNIEnv* env, jclass clazz);
+  static base::android::ScopedJavaLocalRef<jobject> GetLastUsedProfile(
+      JNIEnv* env,
+      jclass clazz);
 
   // Destroys this Profile when possible.
   void DestroyWhenAppropriate(JNIEnv* env, jobject obj);
 
   // Return the original profile.
   base::android::ScopedJavaLocalRef<jobject> GetOriginalProfile(
       JNIEnv* env, jobject obj);
 
   // Return the incognito profile.
   //
@@ skipping 13 matching lines @@
   ~ProfileAndroid() override;
 
   base::android::ScopedJavaLocalRef<jobject> GetJavaObject();
 
  private:
   Profile* profile_;  // weak
   base::android::ScopedJavaGlobalRef<jobject> obj_;
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_ANDROID_H_